SS304 springs are widely used, marine, computer, electronics, automotive, aerospace, railway, wind power, thermal power, engineering machinery, mining machinery, construction machinery, elevators, and other fields. Design: The symmetrically designed hooks at both ends ensure easy installation and secure fastening on the mechanical equipment. Material: The tension spring is made of great quality stainless steel, not easy to rust, more longlasting. Flexibility: Tension springs are provide exceptional elasticity.